.@TheBroad will give a sneak peek of its mid-construction, top floor gallery on Sunday

The $140-million Broad Museum doesn't officially open until Sept. 20, but on Sunday it's set to welcome visitors for a sneak peek of its top-floor gallery.

The one-day event has sparked massive interest among art lovers: When the $10 tickets went on sale Feb. 6, about 1,800 were sold in about 30 minutes, the museum said.

Although the event quickly sold out, the Broad is offering a rush line Sunday from 2:30 p.m. to 8:30 p.m. Rush-line tickets are also $10 (cash only), but they will be sold only if space becomes available.

What will visitors see? No partition walls will have been erected, so the 35,000-square-foot column-free space designed by Diller Scofidio + Renfro will be wide open. Two temporary art installations will be on view.

The Broad

(Al Seib/Los Angeles Times)

“Sky-lit: Volume, Light, and Sound” calls for guests to come through every half-hour from 3 p.m. to 10 p.m. with an hour to explore the gallery and look at installations by artists BJ Nilsen and Yann Novak.

Nilsen’s sound installation, “DTLA,” will provide a link between the building’s architecture and its outside environment as it “brings the soundscape of downtown Los Angeles into the Broad,” the museum said. It will be running throughout the day.

Novak’s sound-and-light work, “Stillness,” will go on after dark. It’s an immersive work “inviting visitors to contemplate the effect of climate change and light on their physical and emotional states.”